SUSSAN Ley is the first woman to lead the Liberal Party following a partyroom vote 29-25 over colleague and shadow treasurer Angus Taylor.

The 63-year-old MP for Farrer, in announcing her candidacy for the leadership, said it was clear the party "got it wrong" and Australia expects a change in direction and a fresh approach.

Ted O'Brien will take on the role of deputy party leader.

Meanwhile, the Nationals leader David Littleproud will remain as party leader after a challenge by Matt Canavan on Monday.

"I am proud of my legacy as leader over the last three years, championing the opposition to the Voice, and fighting for nuclear energy and supermarket divestiture powers," Mr Littleproud said.